He posted the photo to his Twitter on January 25, with the caption, “Kim Woo Bin is so nice and has a warm heart; he’s this generation’s blue chip! Becoming this successful in just a year, I’m thankful.. it makes me want to cry.”

In the photo, shot in black and white, Kim Woo Bin has a sly smile, looking over the shoulder of Kim Tae Woo. The photo has been making fans curious about the unexpected friendship between the two. In the past, Kim Tae Woo (Kim Ki Soo) had hosted Kim Woo Bin’s fan meeting.

He also posted a second photo in color, where he thanked Kim Woo Bin’s fan club members for coming and saying great things. He said, “You’re going to keep an eye on this actor until the very end, right? I believe it.”

Following the highly popular SBS drama “The Heirs,” where he played Choi Young Do, Kim Woo Bin is currently looking for his next work.